Ubuntu 12.04 vs. Windows 7: Intel Sandy/Ivy Bridge Loses On Linux

Here's a comparison of the Ubuntu 12.04 LTS versus Microsoft Windows
7 performance when it comes to using Intel Sandy Bridge and Ivy Bridge processors
with integrated graphics. While the Sandy Bridge graphics performance was once
faster when it came to OpenGL with the open-source Linux driver, that's no longer
the case. The Linux OpenGL performance for both Sandy Bridge and Ivy Bridge
hardware is now slower in most GL workloads than Intel's Windows 7 x64 driver.

In February of 2011, one month after the Intel "Sandy Bridge"
processors began to ship, I ran some tests that yielded results showing Intel
graphics on Linux were still behind Windows. However, the Intel Open-Source
Technology Center developers responsible for the Intel Linux graphics stack were
aggressive in optimizations and bettering the Sandy Bridge Linux support. By May
of last year, the Sandy Bridge
Linux driver could out run the Windows driver. Since last May, the open-source
Intel Linux driver developers have continued making optimizations when it comes
to bettering the OpenGL support level within Mesa and implementing new SNB+ functionality,
performance enhancements within the Intel DRM (Direct Rendering Manager) Linux
kernel driver (RC6, etc), and the bit of work still left within the xf86-video-intel
DDX driver. At the same time though, the Intel Windows developers working on their
closed-source driver have been improving their support and performance too.

With the recent launch of the Intel
Ivy Bridge processors having the new Intel
HD 4000 graphics, I found it time to do another Linux vs. Windows comparison
for Intel graphics. Intel HD 3000 graphics (via the Intel Core i5 2500K Sandy
Bridge) and Intel HD 4000 graphics (via the Intel Core i7 3770K Ivy Bridge) were
tested with Ubuntu 12.04 LTS x86_64 and Microsoft Windows 7 Professional x64.

Unlike the Windows driver, the Intel Linux driver doesn't have a nice graphical
control panel -- just one of the many driver differences between platforms.

The hardware was maintained throughout testing between both operating
systems, aside from swapping out the Core i5 2500K and Core i7 3770K processors
on the ECS Z77H2-A2X motherboard.